📈 Compound Interest

$1,000 at 5% for 10 Years

Investing $1,000 at 5% annual compound interest for 10 years grows to $1,629. That's $629 earned in interest on top of your original $1,000.

Compound Interest Calculator
Australia 2026
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%
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Total value after 10 years
$1,629
Amount invested$1,000
Interest earned$629
Interest multiplier1.63×
Year-by-year growth
YearBalanceInterest
Yr 1$1,050+$50
Yr 2$1,103+$53
Yr 3$1,158+$55
Yr 4$1,216+$58
Yr 5$1,276+$61
Yr 6$1,340+$64
Yr 7$1,407+$67
Yr 8$1,477+$70
Yr 9$1,551+$74
Yr 10$1,629+$78
Final balance after 10 years
$1,629
Invested
$1,000
Interest earned
$629
Multiplier
1.63×

How $1,000 grows at 5%

Compound interest earns returns on your returns — not just your original investment. At 5% per year, your money doubles every 14.4 years (the Rule of 72). Over 10 years, that compounds to a 1.63× multiplier.

In year 1, $1,000 earns $50 in interest. By year 10, the annual interest has grown to $78 — because each year's interest is calculated on a larger balance.

$1,000 for 10 years at different rates
RateFinal balanceInterest earnedMultiplier
4%$1,480$4801.48×
5% ◀$1,629$6291.63×
6%$1,791$7911.79×
7%$1,967$9671.97×
8%$2,159$1,1592.16×
9%$2,367$1,3672.37×
10%$2,594$1,5942.59×

Year-by-year projection

YearBalanceInterest this yearTotal interestGrowth
Year 1$1,050+$50$501.05×
Year 2$1,103+$53$1031.10×
Year 3$1,158+$55$1581.16×
Year 4$1,216+$58$2161.22×
Year 5$1,276+$61$2761.28×
Year 6$1,340+$64$3401.34×
Year 7$1,407+$67$4071.41×
Year 8$1,477+$70$4771.48×
Year 9$1,551+$74$5511.55×
Year 10$1,629+$78$6291.63×

Growth chart

Balance growth over 10 years
$407$814$1k$2kYr1Yr5Yr10
Principal
Interest earned

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